Vania



R. E. CECIL (Q H. E GRANT.

SPRAYING APPARATUS. APPLICATION HLED um. 1:. mm.

Patented Aug. 15, 1916.

FIG-4.

TNESSES UNITED STATES PATENT OFFICE.

ROBERT E. CECIL, 0F SEWICKLEY, AND HORACE E. GRANT, OF PITTSBURGH,PENNSYL- VANIA.

SPBAYING arrmrns.

Specification of Letters Patent.

Patented Aug. 15, 1916.

'1 '0 all whom it may concern Be it known that we, Bonner E. CECIL andHORACE E. GRANT, respectively of Sewickley and Pittsburgh, in the countyof Allegheny and State of Pennsylvania, have invented certain new anduseful Improvements in Spraying Apparatus, of which the following is aspecification.

An object of our invention is to provide a new and improved sprayingapparatus including positively operable means for introducing a fluidunder a substantiall constant and uniform pressure to a tan containing aspraying liquid and utilizing said compressed fluid for continuously a'tating the contained liquid and discharging the same from the tank.

A further object of the present invention is the provision of anapparatus of the character described having positively operable meansfor maintaining a substantially constantand uniform pressure withintheliquid containing tank, whereby the compressed gas and liquid aresimultaneously passed from the tank to a spraying nozzle and dischargedtherefrom in the form of fine, constant, and uniform spray.

In the accompanying drawing, which illustrates applications of ourinvention, Figure 1 is a part side elevational view and a part sectionalview of a spraying apparatus constructed in accordance with ourinvention; Fig. 2, a vertical sectional view taken on line IIII of Fig.1 looking in the direction of the arrows; Fig. 3, a slde elevationalview of the form of our apparatus shown by Fig. 1 showing a modifiedform of construction for regulating and controlling the fluid pressure;Fig. 4, a side elevational view showing an embo iment of our inventiondesigned to be used without conveying the air to the spraying nozzle;and Fig. 5, a detail elevatlonal view showing a lurality of pipes forconveying liquid and t e compressed gas to a plurality of nozzles.

Referring to the drawing, and first to the form of Fig. 1, the apparatusis mounted on a suitable framework comprising longitudinally extendingmembers 1 and transversely extendin members 2. The sprayin apparatus, asil ustrated and as preferre comprises an air tight steel tank 3 in whichis located a perforated pipe 4 having one end thereof projecting througha head of the tank. 5 designates a gasolene motor, and 6, a compressor.

Air or other fluid under pressure is introduced to the interior of thetank from the compressor through a perforated pipe 4 by means of asystem of iping preferably comprising a U-shaped nt portion 7, a.horizontal ortion 8, a union 9, and a check valve 10. means of thepositively operable mechanism set forth, we are enabled to supply aconstant and uniform quantity of air or other fluid under pressure tothe interior of the liquid containing tank, and further to provide for athorough and continuous agitation of the liquid contained in the tank,and a simultaneous discharge of both liquid and air from the tank undera comparatively low pressure.

Located at the bottom of the tank and secured thereto by a couplingmember 11 is a drain pipe 12 having a drain cock 13 and extendingdownwardly through the tank and having its lower end entered in thecoupling member 11 is a dip pipe 14.

It will be noted that the lower end of pipe 14 extends for a slightdistance below the bottom of the tank, and by this construction, w.e areenabled to remove the entire contents of the tank. In addition, theparticular location of the inlet end of pipe 14 provides additionaladvantages, in that the pipe 14 provides a means for producing anannular passageway between it and the drain pipe 12 of restricted area,and also, through the presence of the open end of said pipe at thispoint, enables the latter to be readily cleaned without removing thepipe.

15 designates acock secured to the upper end of pipe 14 to which issecured a flexible hose 16 leading therefrom to a spray nozzle 17. Thetank is filled through a. pipe 18 having a suitable closing cap 19, and20 the horizontal portion and with a flexible pipe 26 leading therefromto the spraying nozzle. By this arrangement the actual entrance for theair from the tank to pipe 26 is shifted to a point corresponding to theposition of valve 25, althou h the structural entrance is at the inleten s of pipes 23, it being readily understood that tilting of the tanksufficient to cover the entrance to either pipe 23 leaves the entranceof the other pipe free for the passage of air to the pipe 26. There is,therefore, practically no liability of the air su ply for the sprayingdevice being cut 0 in use, an advantage of especial importance where theapparatus is mounted on wheels for use in orchards, etc., tilting of thetank due to sloping ground surfaces or splashing of the tank contentsdue to uneven surfaces, being ineffective to entirely close this airsupply unless these conditions are such as would prevent the use of theapparatus otherwise.

In Fig. 3, we have shown a modified form of means for controlling thepressure within the tank; in this form of our invention, in place of therelief valve in communication with the anti-priming means, we providemeans for cutting off the supply of air to the compressor, therebycontrolling the amount of compressed air supplied to the tank. Thesemeans, as illustrated, comprise a casing 28 in communication with thehorizontal pipe of the anti-priming means by a pipe 29, a diaphram 30within the easing, a rod 31, a spring 32, said rod being connected withan operating lever 33 of a valve device 34 through which air isintroduced to the compressor.

As illustrated by Fig. 5, it is our idea to employ means for supplyingthe compressed gas and the liquid at will to a plurality of nozzles, notshown, so that two or more may be simultaneously operated.

In the form of Fig. 4, the relief valve 24 is applied directly to thetank.

By means of the apparatus constituting our invention, we are enabled toprovide a constant and uniform spray regardless of the number ofspraying nozzles employed or the varying quantities of air and liquiddischarged from the tank due to the cutting off of the suppy to one ormore nozzles. Owin however, to varying quantities of air and liquiddischarged from the tank and further to the fact that the tank issupplied with a substantially constant and uniform quantity of air fromthe compressor, means should be provided for regulating the pressurewithin the tank.

In the forms of our invention as illustrated we have shown two forms ofautomatically operable means for controlling the pressure within thetank, we do not desire, however, to limit our invention to the pressurecontrolling means shown.

By means of the invention thus disclosed an apparatus is providedwherein not only a constant pressure is maintained, but the sprayingfluid is constantly agitated. This is important for the reasons that thechemicals forming a part of the spraying fluid are largely non-solubleand must be supported in the liquid in a uniform manner in order tomaintain a spraying fluid of uniform character, strength, andeiiiciency.

What we claim is:

1. In a spraying apparatus and in combination, a liquid containing tank,means for introducing air under pressure to said tank, a drain pipe atthe bottom of the tank, an open-ended upwardly extending liquiddischarge pipe having its inlet end within the drain pipe, and a nozzleoperatively connected to said discharge pipe.

2. In a spraying apparatus and in combi nation, a liquid containingtank, means for introducing air under pressure to said tank, a drainpipe at the bottom of the tank and extending below the same, anopen-ended liquid discharge pipe of less diameter than the drain pipeand extending through said tank and entering said drain pipe, a nozzle,and a hose connection between said discharge pipe and the nozzle.

3. In a spraying apparatus and in combination, a liquid containing,tank, means for introducing air under pressure to said tank, a drainpipe at the bottom of the tank and extending below the same, anopenended liquid discharge pipe of less diameter than the drain pipe andextending through said tank, said means being in the form of a nozzle,and a hose connection between said discharge pipe and the nozzle, saidmeans being in the form of a unit embodying an air-forcing device andmechanism for oper ating said device.

4. In a spraying apparatus and in combination, a liquid containing tank,means for introducing air under pressure to said tank, a drain pipe atthe bottom of the tank and extending below the same, an openended liquiddischarge pipe of less diameter than the drain pipe and extendingthrough said tank and entering said drain pipe, a nozzle, and a hoseconnection between said discharge pipe and the nozzle, and an airdischarge device in communication with said tank, said means being inthe form of a unit embodying an air-forcing device and mechanism foroperating said device.

5. In a spraying apparatus and in combination a liquid containing tankhaving a contro lable open-ended vertically-extending liquid dischargepipe, and also having an air discharge pipe adapted to cooperate withthe liquid pipe in producing the spray, a drain pipe positioned relativeto the open end of t e discharge pipe to permit ready access theretothrough the drain pipe, means ill for introducing air under pressurewithin said tank, and a supporting frame for said tank and means. 7

6. In a spraying apparatus and in combination, a liquid containing tankhaving a controllable open-ended vertically extending liquid dischargepipe, and also having an air discharge pipe adapted to cooperate withthe liquid pipe in producing the spray, a drain pipe positioned relativeto the Open end of the discharge pipe to permit ready access theretothrough the drain pipe, means for introducing air under pressure withinsaid tank, and a supporting frame for said tank and means, said meansbeing in the form of a unit embodying an air-forcing device andmechanism for operating said device.

7. In apparatus of the character described, a liquid containing tank, aliquid discharge outfit, means for providing an air pressure in saidtank to discharge the liquid through said outlet, and an air dischargestructure open to said tank above the liquid level, the discharged airserving as a liquid atomizin-g element in the spraying operation, saidair discharge structure being adapted to prevent closing of the airchannel to the assage of air due to tilting of the tank or sp ashing ofits-contents.

8. In apparatus of the character described, a li uid containing tankhaving independent air and liquid discharge outlets, a motor operatedair compressor, connections between the compressor and said tank,

ROBERT E. CECIL. HORACE E. GRANT.

Witnesses:

W. G. DooLrr'rLE, F. E. GAITHER.

uniform predetermined pressure,

ewsflas-teas-am ;1,194,35

,' nation, a liquid containing tank having a controllable open-endedvertically extending liquid discharge pipe, and also having an airdischarge pipe adapted to cooperate with the liquid plpe in producingthe spray, a

drain pipe positioned relative to the open end of the discharge pipe topermit ready access thereto through the drain pipe, means forintroducing air under pressure within said tank, and a supporting framefor said tank and means, said means being in the form of aunit embodyingan air-forcing device and mechanism for operating said device.

7 In apparatus of the character described, a liquid containing tank, aliquid discharge outlit, means for providing an air through said outlet,and an a1r discharge structure open to said tank above the liquid thePatent pressure 1n sald tank to discharge the liquid of Pittshiirgh,Pennsylvania, for an improvement in Spraying Apparatus,

,saaattach s d y- S ptember, .A- 9

level, the discharged air serving as a liquid atomizing element in thespraying operatron, said air discharge structure being adapted. toprevent closing of the air chan-.

dependent air and liquid discharge outlets,

a motor operated air compressor, connec- "tions between the compressorand said tank,

and means operated solely by-the pressure within the tank for regulatingthe supply of air to the compressor to maintain a substantiall uniformpredetermined pressure within t e tank. I v In testimony whereof weaflix our slgnatures in presence of two wltnesses.

ROBERT E. CECIL. HORACE E. GRANT,

Witnesses:

W. G. DOQLITTLE, F. E. GAITHER.

4 It vishereby certified thatin Letters PatentNo.:"i,194,s58, grantedAugust 15, 1916, upon the -application'of llobert Qecil, of sewickley,and Horace E. Grant,

theiwords'and comma and entering said drain p Lpa; page 3, line 21,claim on the wordl joutfit nf jreadoutlet; and that thesaid Letters-Patent should be L withtheselcorrections therein that; the same mayconform to the record of the F. W. H. CLAY,

qommisstoner of -Patents,

.' ear printed specification requiring correction as follows: Page 2,line 102, I

strike out the comma and the'words, v said means being in the form of.coragflm ln-liettersPa tent No. 1,194,358.

It is hereby certified that in Letters Patent No 1,194,358, grantedAugust 15, 1916, upon the application of Robert E. Cecil, of Sewickley,and Horace E. Grant, of Pittsblirgh, Pennsylvania, for an improvement inSpraying Apparatus, errors appear in'the printed specification requiringcorrection as follows: Page 2, line 102,

claim 3, strike out the comma and the words, said means heing in theform of and the words and comma and entering said drain pipe,; page 3,52 claim '7, forv the Word .outfi read outlet; and that the said LettersPatent should be read these corrections therein that the same mayconform to the record of the i v in the Patent Qflice.

Signed h s gealedthis 5th day of September, A. -D., 1916.

F. W. H. CLAY,

@ [Banal Acting C'omm'iasiomr of Patents.

